[...]

  3550K .......... .......... .......... .......... .......... 80%  471M 0s
  3600K .......... .......... .......... .......... .......... 81%  387M 0s
  3650K .......... .......... .......... .......... .......... 82%  468M 0s
  3700K .......... .......... .......... .......... .......... 83%  436M 0s
  3750K .......... .......... .......... .......... .......... 84%  457M 0s
  3800K .......... .......... .......... .......... .......... 86%  411M 0s
  3850K .......... .......... .......... .......... .......... 87%  486M 0s
  3900K .......... .......... .......... .......... .......... 88%  467M 0s
  3950K .......... .......... .......... .......... .......... 89%  480M 0s
  4000K .......... .......... .......... .......... .......... 90%  416M 0s
  4050K .......... .......... .......... .......... .......... 91%  362M 0s
  4100K .......... .......... .......... .......... .......... 92%  341M 0s
  4150K .......... .......... .......... .......... .......... 93%  324M 0s
  4200K .......... .......... .......... .......... .......... 94%  274M 0s
  4250K .......... .......... .......... .......... .......... 96%  307M 0s
  4300K .......... .......... .......... .......... .......... 97%  347M 0s
  4350K .......... .......... .......... .......... .......... 98%  340M 0s
  4400K .......... .......... .......... .......... .......... 99%  273M 0s
  4450K .......... .......... ...                             100%  260M=0.01s
2019-03-21 18:32:14 (326 MB/s) - 'postfix-3.4.4.tar.gz' saved [4581121/4581121]
warning: Could not canonicalize hostname: giant
Building target platforms: i686-linux
Wrote: /home/users/builder/rpm/SRPMS/postfix-3.4.4-1.src.rpm
exit status 0
Tagging with prefix: auto/ti/
Already on 'master'
No conditional flags passed
from available:
--with   :	
--without:	 cdb epoll ldap mysql pgsql sasl sqlite ssl
Writing git revision for tag auto/ti/postfix-3.4.4-1
error: Macro %_builddir has empty body
error: Macro %_builddir has empty body
Executing(--clean): env -i TMP=/home/users/builder/tmp HOME=/home/users/builder PATH=/bin:/usr/bin:/usr/sbin:/sbin:/usr/X11R6/bin TMPDIR=/home/users/builder/tmp  /bin/sh -e /home/users/builder/tmp/rpm-tmp.52559
+ umask 022
+ cd /home/users/builder/rpm/BUILD
+ rm -rf postfix-3.4.4
Begin-TLD-Builder-Info
Build-Time: user:0.99s sys:0.23s real:5.08s (faults io:199 non-io:220519)
Files queued for ftp:
   4604349 postfix-3.4.4-1.src.rpm
       185 postfix-3.4.4-1.src.rpm.uploadinfo
End-TLD-Builder-Info